Paper padding and transport device



Dec. 3, 1968 A. M BAK ETAL 3,413,668

PAPER FADDING AND TRANSPORT DEVICE Filed Oct. 31, 1966 2 Sheets-Sheet 1 L 0 INVENTORS ALEXM BAK RICHARD P Dec. 3, 1968 A. M. BAK ETAL PAPER PADDING AND TRANSPORT DEVICE 2 Sheets-Sheet 2 v/// fl) l Filed Oct. 31, 1966 INVENTORS ALEXM BAK RICHARD P. WOJC/K 5T7) 3,413,668 PAPER PADDING AND TRANSPORT DEVICE Alex M. Bak and Richard P. Wojcik, Chicago, 111., as-

signors to International Harvester Company, Chicago, 111., a corporation of Delaware Filed Oct. 31, 1966, Ser. No. 590,781 6 Claims. (Cl. 111) ABSTRACT OF THE DISCLOSURE A paper padding and transport device having a plurality of padding racks and pressing units and which is adjustable to accommodate various sizes of paper as well as varying heights of paper stacks in the padding racks.

The present invention relates to a paper padding and transport device and more particularly to an improved paper padding press construction having several padding units combined on a single dolly with a novel adjustable pressing head for each padding unit.

Among the objects of the present invention is the provision of a novel paper padding and transport device having a clamping press mounted on a dolly type base for transportability and mobility so that the press may be loaded at one location and moved to other locations for the application of adhesive as a binder, drying, separating the pads and press unloadings. The transport dolly is equipped with a removable handle to provide for easier movement. The padding rack is constructed so that four pressing units can be combined on a single dolly.

Another object of the present invention is the provision of a novel paper padding and transport device having a padding rack which is adjustable for the requirements of various sizes of paper. The padding rack includes a pair of stationary sides and a movable backstop which is employed to adjust depth requirements of the rack for the various sizes of paper. The backstop is so positioned as to provide for a slight projection of all paper sizes beyond the front of the rack to prevent the slopping of latex adhehesives onto the rack edges, and to facilitate subsequent slitting apart of the stack into individual pads. The bottom surface of the rack and a hinged top for the rack contain grooves to receive the upper and lower edges of the backstop in the desired adjusted position.

A further object of the present invention is the provision of a novel paper padding and transport device having a clamping press for each rack which is fully adjustable for varying heights of paper stacks in the rack. A platen is afiixed to the clamp screw which has spring-limited pivotal motion so that the platen compensates for slightly uneven stacks of paper.

Additional objects and advantages of our invention should be apparent to those skilled in the art from the following description when considered in connection with the accompanying drawings.

In the drawings:

FIGURE 1 is a front elevational view of the paper padding and transport device showing a pair of padding racks on one side of the device.

FIG. 2 is an end elevational view of the device of FIG. 1 and showing that racks are mounted on the dolly in back-to-back relation.

FIG. 3 is a horizontal cross sectional view taken through a padding rack on line 33 of FIG. 2.

FIG. 4 is a partial vertical cross sectional view taken on the line 4-4 of FIG. 3.

FIG. 5 is a perspective view of a padding rac'k showing the adjustable backstop for the rack.

FIG. 6 is a partial perspective view of a clamping platen for a clamping press in the padding rack.

nited States Patent 0 Referring more particularly to the disclosure in the drawings wherein is disclosed an illustrative embodiment of the present invention, FIGS. 1 and 2 disclose a paper padding and transport device 10 having a dolly 11 forming the supporting base for the device mounted on wheels or casters 12 to facilitate movement of the dolly in any direction. A handle 13 is removably mounted in a pair of openings or sockets 14 at either end of the dolly 11 to provide for reverse mounting and easier handling and movement; the handle having washers 15 welded onto the depending ends of the handle and spaced from the lower ends thereof to locate and limit the depth of insertion or penetration of the handle into the sockets 14.

The dolly 11 supports four padding racks 16, 16, 16, 16 with the racks mounted back-to-back in two pairs 16, 16 and 16', 16. Each pair of racks includes a pair of vertically disposed side panels 17 with each side panel having a notched support 18 secured on the inner surface thereof and the outside side panels having end base members 19 secured on the outer surface to position the members in the dolly 11. A back panel 21 for each rack is secured between adjacent side panels 17 at an angle to the vertical direction so that the back panels 21 of the back-to-back racks 16, 16 or 16, 16 incline and converge upwardly as shown in FIG. 2.

A bottom member 22 providing a base for the rack is mounted in the notches of the supports 18 so as to be retained at a slight angle to horizontal and perpendicular to the associated back panel 21 and is secured to the side panels 17, notched supports 18 and back panel 21. The bottom member 22 is provided with parallel grooves 23 in its upper surface and parallel to the back panel 21 to receive the lower edge 25 of an adjustable backstop 24. A top member or closure 27 is hinged mounted on the back panel 21 by hinges 28 with these top members bridging the side panels 17.

The top member 27 has spaced grooves 29 in the lower surface or undersurface thereof disposed parallel to the back panel 21 to receive the upper edge 26 of the adjustable backstop 24. Both the top member 27 and bottom member 22 contain a slot 31 therein adjacent the back panel 21 (see FIGS. 4 and 5) to receive the projecting ends of a clamping press 33 to be later described. The adjustable backstop 24 has an elongated vertical slot 32 therein for cooperation with the clamping press 33. The spaced grooves 23 and 29 in the bottom and top members, respectively, are suitably aligned so that when the adjust able backstop 24 has its edges in these aligned grooves 29 and 23, the backstop 24 will be positioned parallel to the stationary back panel 21.

The clamping press 33 includes an elongated inclined bar 34 positioned between the stationary back panel 21 and the adjustable backstop 24 with the ends of the bar extending through the slots 31 in the top and bottom members. Secured adjacent the lower end 35 of the bar 34 by any suitable means, such as set screw 36, is an arm 37 terminating in a clamp foot 38 which abuts the undersurface of the bottom member 22 (see FIG. 4). Mounted on the bar 34 for adjustable movement thereon is a clamp arm 39 having an enlarged inner end 41 with a slot therethrough accommodating the bar 34, and adjacent the outer end of the arm 39 is an internally threaded opening 42 receiving a threaded screw 43.

Secured to the upper end of the screw 43 by suitable securing means, such as a set screw, is a handwheel 44, and the lower end of the screw 43 terminates in a swivel mounting on a mounting plate 45 (FIG. 4). Secured to the mounting plate 45 is a platen assembly 46 including a pressing platen 47. A spring wire stabilizer 48 is secured to the platen assembly and extends upwardly through an opening 49 formed in the clamp arm 39.

A clutch member 51 (FIG. 4) having an opening accommodating the bar 34 is mounted for limited oscillating movement in the enlarged inner end 41 of the clamp arm 39. The clutch member 51 will act to wedge against the bar 34 to retain the clamp arm 39 in an adjusted position on the bar. A clutch release lever 52 is mounted in the inner end 41 abutting the clutch member 51 and positioned thereabove, and extends forwardly over the clamp arm 39. Both the release lever 52 and the clamp arm 39 extend through the elongated vertical slot 32 in the adjustable backstop 24 as seen in FIGS. 3 and 4.

Referring to FIGS. 1 and 2, the center or inner side panels 17, 17 for the two pair of back-to-back racks 16, 16 and 16', 16' abut and are suitably aligned and joined together by an adhesive or other means. Each rack and its clamping press 33 operates independently of the others. A rack can accommodate a single enlarged paper pad 53 or two smaller paper stacks 53, 53 as shown in rack 16 of FIG. 1. The platen 47 is fixed to the clamp screw 43 but has spring-limited pivotal motion so that the platen compensates for slightly uneven stacks of paper 53. The clamp arm 39 is fully adjustable for various heights of stacks of paper.

In use, the hinged top assembly 27 of a rack 16 or 16' is lifted and the adjustable backstop 24 is positioned in the proper groove 23 of the bottom member 22 and the top member 27 is closed with the upper edge 26 of the backstop 24 received in the proper upper groove 29 so that the backstop 24 is adjusted for the depth requirements of the size of paper being padded and provides a slight projection of the paper beyond the front of the rack. This slight projection prevents the possible slopping of latex adhesives onto the rack edges, and it facilitates subsequent slitting apart of the stack into individual pads.

After the stack of paper 53 is properly arranged in the rack, the release lever 52 is depressed to actuate and release the clutch member 51 so that the clamp arm 39 can be lowered to adjacent the top of the stack, and the lever 52 is released, thereby allowing the clutch member 51 to reengage the bar 34. Then the platen assembly 46 is lowered by turning of the handwheel 44 and screw 43 so that the platen 47 engages and clamps the stack or stacks of paper 53. The padding compound, such as a latex adhesive, is applied to the exposed edge of the stack and allowed to dry. Following drying, the pressing platen 47 is raised and the individual pads are slit apart.

Having disclosed our invention, we claim:

1. A paper padding device comprising a pair of parallel side panels, a base having a material supporting surafce inclined from the horizontal, a stationary back panel extending between the side panels and inclined from the vertical, a movable backstop extending between said side panels and being positioned parallel to the stationary back panel, said backstop having a generally vertically extending, elevated slot formed therethrough, said backstop being movable to various positions with respect to said back panel to vary the spacing therebetween, and clamping press means including an elongated bar positioned between the stationary back panel and the backstop and being substantially in alignment with said elongated slot,

an adjustable platen assembly disposed on the side of said backstop opposite said bar and cooperable'with said base to clamp paper padding therebetween, arm means supporting said platen assembly and extending through said elongated slot, and means for releasably securing said arm means to said bar in various positions along the length thereof whereby the spacing between said platen assembly and said base may be varied.

2. A paper padding device as set forth in claim 1, in which said clamping press means includes a clamping foot secured to the lower end of the bar and abutting the underside of said base.

3. A paper padding device as set forth in claim 2, in which said means for releasably securing said arm means to said bar includes a clutch member associated with said arm means adapted to grip said bar to retain the arm means in adjusted position, and a clutch release lever extending through said backstop slot for actuating said clutch member to disengage the bar, said clutch member being actuable from the side of said backstop opposite said bar.

4. A paper padding device as set forth in claim 2, in which said adjustable platen assembly includes a manually adjustable screw threadingly engaging the outer end of said arm means, and a pressing platen swivelled on the lower end of said screw.

5. A paper padding device as set forth in claim 4, including a spring wire vertically mounted on the pressing platen, said arm means having an opening receiving the upper end of said spring wire.

6. A paper padding device comprising a pair of parallel side panels, a base having a material supporting surface inclined from the horizontal, stationary back panel extending between the side panels and inclined from the vertical, an adjustable backstop positioned parallel to the stationary back panel, an adjustable clamping means positioned between the stationary back panel and the adjustable backstop, an adjustable platen assembly connected to said clamping means and cooperating with said base to clamp paper padding therebetween, and including a top member hingedly mounted on the upper edge of the stationary back panel and cooperating with said adjustable backstop, said base and said top member having aligned parallel grooves receiving the upper and lower edges of the adjustable backstop and retaining the backstop in adjusted position.

References Cited UNITED STATES PATENTS 1,359,032 11/1920 Cole 21151 X 2,093,716 9/ 1937 Foy 11--l 2,142,585 1/1939 Foy 11l 2,593,738 4/ 1952 Dollahite 11l FOREIGN PATENTS 419,908 10/ 1925 German.

LAWRENCE CHARLES, Primary Examiner. 

